update homepage URIs

Change-Id: I482a72bf296978625b1e82ef580b0e0d4d57ff25
diff --git a/subcmds/upload.py b/subcmds/upload.py
index fdc7e28..d12efd1 100644
--- a/subcmds/upload.py
+++ b/subcmds/upload.py
@@ -129,7 +129,7 @@
 References
 ----------
 
-Gerrit Code Review:  http://code.google.com/p/gerrit/
+Gerrit Code Review:  https://www.gerritcodereview.com/
 
 """